CVE-2026-55877

Symfony UX is a JavaScript ecosystem for Symfony. From 2.17.0 before 2.36.1 and from 3.0.0 before 3.2.0, the ux_icon() Twig function is marked is_safe=['html'] and Icon::toHtml() inlines SVG source verbatim, allowing unsanitized local SVG files or Iconify on-demand JSON body responses containing nested script elements, on* event handlers, or dangerous URL schemes to execute cross-site scripting. This issue is fixed in versions 2.36.1 and 3.2.0.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/symfony/ux/commit/3a4964ec3700f0af4e13f7bfbf8bb3174c3e79d1
https://github.com/symfony/ux/releases/tag/v2.36.1
https://github.com/symfony/ux/releases/tag/v3.2.0
https://github.com/symfony/ux/security/advisories/GHSA-6v8j-33hc-mv84

Configurations

No configuration.

History

08 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-08 22:17

Updated : 2026-07-10 19:13

NVD link : CVE-2026-55877

Mitre link : CVE-2026-55877

CVE.ORG link : CVE-2026-55877

JSON object : View

Products Affected

No product.

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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